The phrase "additional modifier" is correct and usable in written English.
It can be used in contexts related to grammar, linguistics, or programming, where you want to specify an extra element that modifies or adds information to a noun or verb.
Example: "In the sentence, the additional modifier 'very' enhances the adjective 'happy' to indicate a greater degree of happiness."
Alternatives: "extra modifier" or "supplementary modifier".
The increased integration of next-generation sequencing into routine clinical practice will enable the detection of additional modifier genes and evaluation of previously suggested modifier genes.
In Psychiatric Evaluation, notice the decreased complexity of the new codes (additional modifier codes are now used in conjunction with the main code).
For instance, some mutants in Antirrhinum develop higher cotyledon numbers with incomplete penetrance, which can in part be enhanced or suppressed by additional modifier genes depending on the genetic background (Stubbe, 1963).
Because most C. glabrata strains did not exhibit the ts phenotype in response to calcineurin inhibitors, it suggests that additional modifier mutations might be present that suppress the ts phenotype.
It has been reported that family members with FD with the same mutation may have considerably different phenotypes owing to the influence of additional modifier genes and/or environmental factors [ 33].
On the other hand, for a complex trait, the primacy of any individual gene is not perceptible, and the interaction of two or more independently inherited pairs of alleles, most likely influenced by additional modifier genes, results in the disease.
Zhang et al. show, using a mouse model lacking the SHH pathway regulator Cdo, that a related gene, Boc, modifies the HPE phenotype, providing a framework to identify additional modifiers of HPE.
The gender and the age at exposure are additional modifiers of the individual biological risk.
Additional modifiers identified genes and pathways not previously implicated in CUG-induced toxicity.
Finally, given that sub-9 (Col) stems appear wild type, and sub-9 flower and silique defects are greatly reduced, the data also indicate that Col carries additional modifiers affecting the SUB-dependent regulation of stem, flower, and silique form.
However, ileal CD is characterized by a specific decrease in Paneth cell alpha-defensins and defective Paneth cell-mediated host defense [42] which has been linked to the NOD2 genotype [43], although this finding is opposed by the results of a recent study [44], and additional modifiers of Paneth cell function such as XBP1 are involved [45].
